[Karl Bebout]

TCI has a conversion kit for 11" rotors that will fit your Mustang II spindles. I got the adapter from them and then bought calipers rotors, bearings, and pads from a local parts store. They also offer the complete set up if you prefer. I went local just for the easier path if I ever need a replacement. It was an easy swap and I feel much more secure with the larger braking capacity. BTW, you can get a kit for either an 11" Granada rotor with a 4 1/2" bolt pattern, or a 10 1/2" Chevelle, if you happen to have a 4 3/4" bolt pattern. (Making the asumption that you do have five lug wheels)